This feature is experimental! It is only provided to illustrate plausible variations in time scales.
Note that pairwise TMRCA and allele age were estimated on the basis of shared haplotype segments that were previously inferred using a hidden Markov model (HMM), for which the default parameters were used.
Any changes made here will only affect the scaling of TMRCA, but not allele age, which is displayed without change.

Time of the mutation event that gave rise to the focal allele; estimated from the distributions of pairwise TMRCA inferred for concordant and discordant pairs.

TMRCA

Time to the most recent common ancestor; inferred from genetic information observed locally (around the focal genomic position) at the haplotype segment shared between a pair of genomes.

Concordant pair

A pair of haplotypes (i.e. genomes) which both carry the focal allele. Concordant pairs are expected to share a most recent common ancestor more recently than the time of the focal mutation event.

Discordant pair

A pair of haplotypes (i.e. genomes) where one carries the focal allele and the other does not. Discordant pairs are expected to share a most recent common ancestor further back in time than the time of the focal mutation event.